Wall St recovers after seesaw session

Weak Chinese and European economic data have weighed on stocks around the world and boosted safe-haven Treasuries and the Japanese yen, though Wall Street shares edged higher as investors took advantage of cheaper shares to ring in the new year.

Chinese factory activity contracted for the first time in more than two years, according to a private survey.

The Purchasing Managers' Index (PMI) for the euro zone also reached its lowest level since February 2016, and France's PMI fell in December for the first time in two years.

Concerns about the flagging global economy contributed to US stocks posting a loss in 2018 for the first time in a decade.

The US benchmark S&P 500 stock index dropped as much as 1.6 per cent on the data, but later moved higher in choppy trading and ended up 0.13 per cent on Wednesday.

Bank and energy shares, which have been especially hard-hit in recent sell-offs, were among the biggest gainers. But while cyclical stocks rose, defensive shares fell.

Keith Lerner, chief market strategist at SunTrust Advisory Services in Atlanta, said that divergence was likely driven by investors seeking to rebalance their portfolios by looking for undervalued stocks

"It's a normal shifting in position, regardless of the data today," Lerner said. "We're seeing a 'January effect' on areas of the market that have sold hard."

Energy shares also benefited from a jump in oil prices, which climbed as US stocks recovered.

MSCI's gauge of stocks around the globe ended 0.26 per cent lower, as did Asian markets and the pan-European STOXX 600.

Reflecting lingering investor nervousness, yields on US 10-year Treasury notes fell, hitting an 11-month low. However, the boost in oil prices pushed up yields on short-dated maturities, flattening the yield curve . An inverted yield curve is widely seen as an indicator of a future recession.

"The yield curve is signalling that something is wrong," said Matt Miskin, market strategist at John Hancock Investments in Boston. "The underlying economic data continues to suggest a slowdown."

The safe-haven Japanese yen reached a seven-month high against the dollar.

Yet the dollar index, which measures the greenback against a basket of six other currencies, advanced 0.7 per cent as the euro and sterling fell more than 1 per cent. The euro sank as a result of weak European manufacturing data, while concerns about Brexit negotiations weighed on sterling.

The Dow Jones Industrial Average rose 18.78 points, or 0.08 per cent, to 23,346.24, the S&P 500 gained 3.18 points, or 0.13 per cent, to 2,510.03 and the Nasdaq Composite added 30.66 points, or 0.46 per cent, to 6,665.94.

Brent crude futures gained $US1.11, or 2.06 per cent, to settle at $US54.91 ($A78.60) a barrel. US crude futures rose $US1.13, or 2.49 per cent, to settle at $US46.54 a barrel.